$\tan\left(x\right)\cdot\left(\tan\left(x\right)+\cot\left(x\right)\right)-\sec^2\left(x\right)$

$5x^2+7x-3x^2$

$\int\sin\left(-10x\right)dx$

$-\left(1^2\right)+2\left(1\right)+2$

$\frac{2x\left(\ln\left(y\right)+1\right)-2x}{x^2+y^2\sqrt{y^2+1}}$

$m^2-10m+5$

$\int\frac{ln^3}{x\sqrt{ln^2z-4}}dx$